{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "As heroin addicts sometimes faint while using illicit drugs , doctors might attribute too many episodes of syncope to illicit drug use and thereby underestimate the incidence of TdP in this special population , and the high mortality in this population may , in part , be caused by the proarrhythmic effect of methadone ."}
{"Disease": ["syncope", "TdP"], "Chemical": ["heroin", "methadone"]}